Hourglass timer



FIG. 1 is a perspective view of an hourglass timer showing my newdesign.

FIG. 2 is a top plan view thereof, the bottom plan view being a mirrorimage thereof;

FIG. 3 is a typical side elevational view thereof.

A broken-line showings of the sand level in FIGS. 1 and 3 are forenvironmental purposed and form no part of the claimed design.

The ornamental design for an hourglass timer, as shown.